| Sales Corporation of America | AMEX Symbol | SLS |
| Site Log Submission | Computing | SLS |
| Sanatorio La Soledad | Medical | SLS |
| Silistra | Airport Code | SLS |
| Savior Of Lost Souls | Religious | SLS |
| Software Landings System | Softwares | SLS |
| Secondary Landing Site | Space Science | SLS |
| side-lobe suppression | Government | SLS |
| Surf Lifesaving | Non-Profit Organization | SLS |
| Sortie Lab Simulator | Space Science | SLS |
| Supplemental Loan For Students | University | SLS |
| Strained Layer Silicon | Electronics | SLS |
| Stanford Law School | Other | SLS |
| Stein-Leventhal Syndrome | Physiology | SLS |
| Saint Lawrence Seaway Development Corporation | US Government | SLS |
| Selective Laser Sintering | Physics | SLS |
| Spacelab Life Sciences | Space Science | SLS |
| Severed Life Support | Physiology | SLS |
| Self Levelling Suspension | Transportation | SLS |
| Sweet Little Sister | Texting | SLS |
| SALANPUR | Indian Railway Station | SLS |
| Single Light Source | Physics Related | SLS |
| Sim Lim Square | Community | SLS |
| Seville Luxury Sedan | Transportation | SLS |
| Shipping List Service | Business Firm | SLS |
| Saint Luke's South | Medical | SLS |
| Super Light And Sport | Transportation | SLS |
| School of Logistic Science | Government | SLS |
| Sabathani Life Skills | Organization | SLS |
| Soft Landing Systems | Military | SLS |
| Spacelab Simulator | Space Science | SLS |
| Soft Landing System | Military | SLS |
| Statement Level Simulator | Space Science | SLS |
| Shipping Lists Service | Business | SLS |
| Silistra, Bulgaria | Regional Airport Code | SLS |
| Space Launch System | NASA | SLS |
| Switch Level Simulator | Networking | SLS |
| Superb Level of Service | Funny | SLS |
| Short leg splint | Physiology | SLS |
| Steven Lambeck Site | Internet | SLS |
| Sanatorio La Salud | Medical | SLS |
